Cystic parathyroid macroadenoma or esophageal duplication cyst? A rare presentation of a common pathology Leire Zarain Obrador; Iñaki Amunategui Prats; José Luis Escat Cortés; Enrique Mercader Cidoncha;

International cooperation for general surgeons: Results of the national survey about the implication and importance of the Spanish surgery in international cooperation Ainhoa Aixa Maestu Fonseca; Marc Vallve-Bernal; Itziar Larrañaga Blanc; Fernando Turégano Fuentes; Juan Carlos Puyana;

Relationship between the anatomical location and the selective non-operative management of penetrating stab wounds in the abdomen María Tudela Lerma; Fernando Turégano Fuentes; María Dolores Pérez Díaz; Cristina Rey Valcárcel; Lorena Martín Román; Cristina Ruiz Moreno; María Luz Fernández Vázquez; María Fernández Martínez;